Wheel-tire.



A. E. BANGS. WHEEL TIRE.

l APPLIOATION FILED JULY 29, 1908.' 923, 104. Patented May 25, 1909.

vy@ j@ @j @mmm/6%. "UJI '11% a ANSON R. BANGS, OF NEW YORK, N. Y.

y tion.

y No. 923,104.

. wnnnLTmn.

To all whom 'it concern: Y

1 3e it known t at I, AnsoN R. BANGs, a cltizen 'of vthe United States, and .a resident ofINewl York city, in the county of New York andj'Stateof New York, have inventedacern "tain new and useful Im rovement in Wheel- Tires, of which the fol owing -isla specifica- Thisfinvention relates to tiresfor selfpropelled andother vehicles, and has for objects .the securing of adhesion to the roadi g 6 may be used between `the nuts z and the way andresilience' of the tire and also propsure 'in order to vert or quality f non-punctur'ability.

other. obg'ect is to secure a relatively A long ylife to an iniated'tire.

Another ob]ect is to inject air under pres- Inaintain the air-pressurein .the tire. l V l A n Other objects will appear hereinafter. l

.n l The invention consists offeatures of oonstructlon, arrangements and combinations of devioos hereinafter described and more particularlyv pointed out in` the `appended claims.

The invention is emissies in the are illus,-Y

trated in the accompanying drawing, formpart hereof, in which l is a ragmentary view onv the central 1 ure `1 is:across-se:tionall view; Fig. 2 lane of the tire, showing side elevations o ltwo cups or cylinders,etc.; and Fig. 3 is a modiication showing the pumpcylinder positively connected to the air-reservoir.

11n thedrawing, the'reference character a kknown form or ty e..

marks a rim, of a known. .form or type, l.and b marks the locking ring-used with such rim, while c designates av rubber shoe, also .of

rlhe reference designates la metal tube placed withinthe shoe c, saidtube-being .somewhat pear-shaped in transverse section,

the screw threads whereby thecylindricalcupsV f are attached to said tube d, said cu lsf being and thickened or stllenedat e to provide for.

provided with external flanges g W 'ch seat on ,theouter surface of the tube d, asshown.l Concen'tric with the cups f are othen cups or cylinders h, said cu sf and h being integrally united together an separated by the walls..t

'a so integral with the metal of the cups, in the preferred form.. The walls .or se arating endsfi are located-ashortdistance ownthe cylinders h ifrom 4the cylinders or ou f,

E and are provided-with rforations or. a

ings for the piston ro .up `Paokins l are secured about the pistnnrods a by t ,e nuts n Specicaton o! Letters Patent. n applicano; ined my 29, 190s. serial No. 445,955.

Patentedl May 25, 1909.

u. the vundersidesof the clamps gx. IPackings against l aforesaid, whereby air tight septums between bossesto secure airtightujoints. vBetween the clamps lx and the lunger heads or ends 'l are cu pcd esther pac gs p, saidpackings being Inly held by the clamps and the ends .allow access of air behind the packings as shown. l

Preferably A.oi one piece with the piston rods n are the piston-heads o, inthe cylmdels h. Cup d leather packings p, held in place ports .s which, in the instance illustrated, connect the interior of said cylinders h with the space of the tube d, suitab v @being provided for the purpose of preventders, and the portss being locatedfat the u 4per ends of the cylinders h so as to disc when these are forced outwardly of t e wheel.

stops to limit the outward motion of the plungers 'y under the laction of the air conned 1n *the Vcupsf allow the exit andentry of air from or pl ers y move toward and from t e loot- -tomsfllgsaid'cu sf. vThe air in theoylmders f is compre more or less when. the plun-j gers y. are drvenein, the amount of compresr sion 'depending upon the areas of the -flrleos` m as lwelhasn on the extent, ofthe inward :motion o the p ungersr- Where the. plu ein aforesaidythe clampsare recessed at gz toby the c amp'ing nuts g, prevent-leakage ofI argethe air compressed by the istons.l o`

The walls i and l-pistonheads o also act as' Wheel. V,The cylinders` h are provided with e check-valves v mgvair from passing back into the said cylinv the oupsf. Small vents m in the bottoms of l and into the cylinders or cupsf asthe istonsl y are hollow,- asgin thel ,instncgfmumw the drawing, their upper ends are closed by airfinto the small spaces inside the shoe c, the

- shoe c is as fully distended as in case the soft the circumferentially lextending ribs or axes in the plane of the wheel.

l as in Fig. l; or such cylinders h may be-proj iiithe inn-er face or wall of the tubed, as t, shown in Fig.- 3. Packing rings or gromets rsaidcylinders z,A in communication with the air.

'are in the osition shown in Fig. 1, Whenf against the inner wall of the tube d, whereby f. The differential areas of the cylinders g the heads 2, which Y screw therento, and which heads are rectangularl in plan and have their outer surfaces shaped to conform to the inner surface of the shoe c. The rubbercshoe c may be provided on the inside` thereof with iianges 5.at each side `of the heads 2 for the purpose of holding the latter with the longer The` inner Vends of the cylinders h may be closed by the caps fu, which screw thereinto,

videdv with `external `iianges 3 and with threaded ends and screw into threaded holes lnifay be used toi-usure air tight joints at the ends of the cylinders 7L.) The cylinders h are in communication with the air by means of the holes w through the caps v and the tube (Zjand in case there is not enough seepage of 'rim avmay'have perforations 4 therein to put In use,the tube d and cylindeisf are filled with air under a suitable pressure, and the plungers y are normally'T in their-outer positions (those shown in Figs. 1 and 2) andthe rubber inner tube were' used, the outward motion of the plungers being limited by the piston heads "o and the stop-walls i, as will be understood. The cylinders h have air at the atmospheric pressure therein, when they -ever the p uiigersy aie driven in to any extent, the check valve at r opens and allows the air to pass above the piston o, or into the space between said piston and the wall i," when the plunger is forced outward again, by the air-pressure acting on the end vof the plunger y, the air trapped above the piston o is forced out through the perforation s into the tube d. Excessive pressure in the tube d maybe avoided byusing any suitable form of relief valve, such as that shown at 6x.

It is noted that, with respect to certain features of the invention, the head or s top o f acts merely to limit the outward motion of the plungers, in which case vthe cylinder 7i l could be omitted without departing from the invention in respect of said features; also, that the cylinders h act to brace the cylinders the eli'ect of blows on the outer face of the tube d and of the -plungers against the bottom ofthe cylinders f is transmitted to the rim .afby arranging the clamps gx so that they strike the bottoms .ci the cylinders (assuming them to be driven that far) di-` rectly opposite the walls of the cylinders h, there is no tendency to distort the cylinders oi daslipots-to the outward motion of the plungers y, and slamming may. be. prevented' by making the openings s sufficiently small. That is, the plunger-piston 'y has a rgreater eective area thanhas the piston o, thus making the two differential pistons with respect to each other. The 'eiiectsl of centrifl ugal 4force may be minimized by making the .plungers, piston rod's, and other moving parts hollow and' recessedwherever possible without sacrifice of strength. Should the cylinders hbe omitted, as in utilizing the rods n and heads o merely as stops for the plung gers,.the holes lfm, may also be omitted, providedtliere is suicientv clearance around the rods nfwhere these pass through-the ends of the cups f.

The heads oi the plungers y form a sectional tread for 'the wheel the various meinbers of which may-move in and out independentlyvone. of another, and any suitable form of casing, shoe or tire-cover may be einployed to give better adhesion toroadways and to exclude dirt and-dust from the working parts; the shoe c shown in the drawing is one such cover. or casin The invention is notgliinited to the precise form thereof shown in the drawing and above described, but may be embodied otherwise without departing from the spirit and the sco e of the claims.

hat I claim as new and desire-to secure r byLet-ters'Patent of the United States isp--v 1. Ina wheel-tire, the combination With-a tube, aseries of cylinders withinfand secured to said tube, said cylinders being open at their outer ends and also having-ports connecting them with the space lin said tube,

smaller cylinders connected .tandem to said open-end cylinders, said tandem cylinders forming struts in said tube and said smaller cylinders being provided withivalved assageways whereby they discharge air rom l thenise ves 4against air-pressure in said tube and larger cylinders, and diierential'pistons in said cylinders, of a tire-cover or casing.

2,. In a wheel-tire, the combination with a metal tube, a series of cylinders within and secured to said tube, said cylinders being open at their outer ends, smaller cylinders integralY with 'said open-end, cylinders and placedt'andem with respect thereto and said tandem cylinders forming struts in said tube, plungersjin said open-end cylinders, pistons in said smaller cylinders, rods connecting said lplungers -andsaid pistons, means whereby'said plungers force air into and draw it from said tube, and 'means whereby said isf tons force air out of said smaller cylin ers against airl ressure in said tube and saidv o en-end cy 'nders during outstrokes of said p ungers, of atire-cover or casing.

3. In a wheel-tire, the combination of an y y rair-reservoiig a cylinder connected by a passaeway with said reservoir, a plunger in said y f -metal tube, an outwardly-opening cylindrical (mpwithinl and connected at its mouth to said tube, aplunger in said cup, said cup being provided Withahole whereby said plunger l jforce's airinto and'draws it from said tube, a

rod connected to said plunger and'passing l rim and the traction-member, of a series ,of pnenmatieally-connected loutwardly-o eni'ng cups, 'plungers in said cups coa'cting with the traction-member, pump-cylinders `between said cups and the rim separated; from said cups by Walls, pistons in said cylinders, rods i connecting sald plungers and said pistons and y air may by said pistons be mingled with i the air in said connected cu s. f

7 In a Wheel, the combination with the i Wheel rirn'and the traction member, of in- E ter-posed' alternately-aeting air-compression lEassing through said Walls, and means Wherethrough the bottom of saidcup, anda stop and air-pumping devices the said air-pumpon said rod eoaeting With the bottonrof the ing ,devices being located next the rim and cup for limiting the outward motion ofsaid i acting as dash. )ots for said compression de- I. metal tube, a cup set' in the outer face of said l tube, a plun er in said cup,a cylinder placed New York and State of NewYork this 27th plunger, of a cover or casing. Vices and ming ing .fresh air with that acting on said compression devices.

.5. In a Wheel-tire, the combination With a Signed at New York city in the county of :tandem Wit said cup and -communicating i day of July A. D. 1908.

throufh avalved opening, cylinf with.` the atmosphere, and Withsaidtubei a piston in said t.

er, and a connectionbetween said pis-` Witnesses:

' RQBT." H. HIBBARI),

ton and said lunger, of a tire-cover or casing.V 1'

i R'. W.. BARKLEY.

Ina W ieel, the combinationwith theI ANsoN n; BANGs. 

